/*
*  Copyright 2019-2020 Zheng Jie
*
*  Licensed under the Apache License, Version 2.0 (the "License");
*  you may not use this file except in compliance with the License.
*  You may obtain a copy of the License at
*
*  http://www.apache.org/licenses/LICENSE-2.0
*
*  Unless required by applicable law or agreed to in writing, software
*  distributed under the License is distributed on an "AS IS" BASIS,
*  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
*  See the License for the specific language governing permissions and
*  limitations under the License.
*/
package me.zhengjie.modules.zhaojiu.service.impl;

import me.zhengjie.modules.zhaojiu.domain.Guidance;
import me.zhengjie.utils.ValidationUtil;
import me.zhengjie.utils.FileUtil;
import lombok.RequiredArgsConstructor;
import me.zhengjie.modules.zhaojiu.repository.GuidanceRepository;
import me.zhengjie.modules.zhaojiu.service.GuidanceService;
import me.zhengjie.modules.zhaojiu.service.dto.GuidanceDto;
import me.zhengjie.modules.zhaojiu.service.dto.GuidanceQueryCriteria;
import me.zhengjie.modules.zhaojiu.service.mapstruct.GuidanceMapper;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.Pageable;
import me.zhengjie.utils.PageUtil;
import me.zhengjie.utils.QueryHelp;
import java.util.List;
import java.util.Map;
import java.io.IOException;
import javax.servlet.http.HttpServletResponse;
import java.util.ArrayList;
import java.util.LinkedHashMap;

/**
* @website https://el-admin.vip
* @description 服务实现
* @author Jiayin Wei
* @date 2021-12-09
**/
@Service
@RequiredArgsConstructor
public class GuidanceServiceImpl implements GuidanceService {

    private final GuidanceRepository guidanceRepository;
    private final GuidanceMapper guidanceMapper;

    @Override
    public Map<String,Object> queryAll(GuidanceQueryCriteria criteria, Pageable pageable){
        Page<Guidance> page = guidanceRepository.findAll((root, criteriaQuery, criteriaBuilder) -> QueryHelp.getPredicate(root,criteria,criteriaBuilder),pageable);
        return PageUtil.toPage(page.map(guidanceMapper::toDto));
    }

    @Override
    public List<GuidanceDto> queryAll(GuidanceQueryCriteria criteria){
        return guidanceMapper.toDto(guidanceRepository.findAll((root, criteriaQuery, criteriaBuilder) -> QueryHelp.getPredicate(root,criteria,criteriaBuilder)));
    }

    @Override
    @Transactional
    public GuidanceDto findById(Long guidanceId) {
        Guidance guidance = guidanceRepository.findById(guidanceId).orElseGet(Guidance::new);
        ValidationUtil.isNull(guidance.getGuidanceId(),"Guidance","guidanceId",guidanceId);
        return guidanceMapper.toDto(guidance);
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public GuidanceDto create(Guidance resources) {
        return guidanceMapper.toDto(guidanceRepository.save(resources));
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public void update(Guidance resources) {
        Guidance guidance = guidanceRepository.findById(resources.getGuidanceId()).orElseGet(Guidance::new);
        ValidationUtil.isNull( guidance.getGuidanceId(),"Guidance","id",resources.getGuidanceId());
        guidance.copy(resources);
        guidanceRepository.save(guidance);
    }

    @Override
    public void deleteAll(Long[] ids) {
        for (Long guidanceId : ids) {
            guidanceRepository.deleteById(guidanceId);
        }
    }

    @Override
    public void download(List<GuidanceDto> all, HttpServletResponse response) throws IOException {
        List<Map<String, Object>> list = new ArrayList<>();
        for (GuidanceDto guidance : all) {
            Map<String,Object> map = new LinkedHashMap<>();
            map.put("老师ID", guidance.getTeacherId());
            map.put("学生ID", guidance.getStudentId());
            map.put("指导时间", guidance.getDate());
            map.put("指导主题", guidance.getTitle());
            map.put("指导内容", guidance.getContent());
            map.put("状态", guidance.getEnabled());
            map.put("创建者", guidance.getCreateBy());
            map.put("更新者", guidance.getUpdateBy());
            map.put("创建日期", guidance.getCreateTime());
            map.put("更新时间", guidance.getUpdateTime());
            list.add(map);
        }
        FileUtil.downloadExcel(list, response);
    }
}
